Finding the Fourth Proportional to 268,161.80, 402,296.70 and 78,621.80
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Solution
The fourth proportional to 268,161.80, 402,296.70 and 78,621.80 is: 117,948.53
Step by Step Solution
- Step 1: Write the proportion equation
268,161.80 : 402,296.70 = 78,621.80 : x - Step 2: Convert to fraction form
268,161.80/402,296.70 = 78,621.80/x - Step 3: Cross multiply
268,161.80x = 402,296.70 × 78,621.80 - Step 4: Simplify right side
268,161.80x = 31,629,290,688.06 - Step 5: Solve for x
x = 31,629,290,688.06/268,161.80 - Step 6: Final answer
x = 117,948.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.